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Proceedings 2018, 2(8), 541; https://doi.org/10.3390/ICEM18-05435

Load-Displacement Assessment of One-Way Reinforced Concrete (RC) Slabs Externally Strengthened Using CFRP Strips under Blast Loads

1
Civil and Materials Engineering Department, Royal Military Academy, Brussels 1000, Belgium
2
School of Engineering, The University of Edinburgh, Edinburgh EH9 3JL, UK
Presented at the 18th International Conference on Experimental Mechanics (ICEM18), Brussels, Belgium, 1–5 July 2018.
*
Author to whom correspondence should be addressed.
Published: 12 July 2018
PDF [925 KB, uploaded 14 August 2018]

Abstract

Dynamic behaviour of Reinforced Concrete (RC) structures can be assessed using a Single-Degree-of-Freedom (SDOF) approach. Such a method is highly dependent on the resistance curve of the structure which is generally represented by a bilinear elasto-perfectly-plastic approximation. This approximation might lead to erroneous results when it refers to the use of externally bonded Fibre Reinforced composites for flexural capacity upgrade of Reinforced Concrete (RC), mainly when the concrete-to-FRP interface failure is to be included. One-way slabs are experimentally and numerically investigated in this study in a 3-point flexural configuration. Assessment on the load-displacement behaviour of a reference specimen and its retrofitted counterpart is performed. Special attention is given to the behaviour of the structure after the concrete-to-FRP failure. Comparison is made between experimental and numerical results and a good agreement is obtained. A complementary analytical study based on the SDOF method is conducted to understand the influence of several resistance curves on the overall displacement of the same structure when subjected to different pressure-impulse combinations.
Keywords: blast loading; reinforced concrete; Fibre Reinforced Polymers; Externally Bonded Reinforcement; flexural capacity; load-displacement; Single-Degree-of-Freedom blast loading; reinforced concrete; Fibre Reinforced Polymers; Externally Bonded Reinforcement; flexural capacity; load-displacement; Single-Degree-of-Freedom
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Mourão, R.; Maazoun, A.; Teixeira-Dias, F.; Vantomme, J.; Lecompte, D. Load-Displacement Assessment of One-Way Reinforced Concrete (RC) Slabs Externally Strengthened Using CFRP Strips under Blast Loads. Proceedings 2018, 2, 541.

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